Long-term Debt - Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Apr. 28, 2016
Obligations
Total debt	$ 156,189	$ 158,790
Costs associated with issuances of debt	(4,583)	(5,137)
Current portion of long-term debt and lease obligations	(39,983)	(14,581)
Non-current portion of long-term debt and lease obligations	116,206	144,209
Senior secured second-priority notes [Member] \| Senior secured second-priority lien notes (maturing December 15, 2021) [Member]
Obligations
Total debt	120,569	120,569	$ 120,600
Senior secured second-priority notes [Member] \| Senior secured third-priority lien notes (maturing May 15, 2018) [Member]
Obligations
Total debt	28,497	28,497	$ 28,500
Revolving credit facility [Member]
Obligations
Total debt	10,000	10,000
Equipment capital leases [Member]
Obligations
Total debt	1,365	3,446
Other debt [Member]
Obligations
Total debt	$ 341	$ 1,415

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of long-term debt and capital lease obligations including current maturities.

+ References

No definition available.

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